Selvaged wire conveyer belt



June 24, 1930. F. N, WOODMAN SELVAGE'D WIRE CONVEYER Filed April 5, 1928 [m /rim 170/20: fl/ Mod m7 altar/25y: w

Patented June 24, 1930 UNITED STATES PATENT OFFICE FRANCIS N. WOODMAN, OF CLINTON, MASSACHUSETTS, ASSIGNOR TO WICKWIRE SPENCER STEEL COMPANY, OF NEW YORK, N. Y-, A CORPORATION OF DELAWARE SELVAGED WIRE CONVEYER BELT Application filed April 6, 1928. Serial No. 267,969.

This invention relates to a wire conveyer belt of the type formed by interlacing spiral wire members.

It is the general object of my invention to provide such a belt witha selvage formed by an improved and very simple method. By the provision of this selvage, the edges of the belt are given a relatively smooth and continuous structure, the wearing qualities of the belt are increased, and the chances of accident or injury by engagement with the projecting ends of the spiral members is substantially eliminated.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings in which:

Fig. 1 is a plan view of a portion of my improved conveyer belt;

2 is an edge view thereof, looking in the 'rection of the arrow 2 in Fig. 1; and

Fig. 3 is a plan view illustrating the method of forming the selvage.

Referring to the drawings and particularly to Fig. 3, my improved conveyer belt is first formed in the usual manner by interlacing a series of spiral wire members 10' to form a spiral wire conveyer belt of a somewhat usual construction. The spirals of the conveyer belt are thereafter preferably flattened in cross-section of the fabric, as indicated in Fig. 2, by passing the belt through pressure rollers or otherwise exerting pressure thereon.

After forming and flattening the conveyer belt as above described, I form my improved selvage by compressing the end turns of the i 40 spiral members 10 transversely or widthwise of the belt, so that the end turns are brought to closely adjacent and substantially parallel relation at the edges of the belt.

A preferred method of producing this selvage isby inserting lugs or projections 12 within certain of the diamond-shaped meshes of the spiral fabric, and in thereafter exerting transverse pressure against the edge of the belt, as by moving a plate 14 in the direction of the arrow a in Fig. 3.

The lugs or projections 12 preferably present a flat face toward the plate 14 and the wires, being compressed between the lugs and the plate, assume the closely adjacent parallel relation shown in Fig. 1.

In this manner the edges of the belt are strongly reinforced, the projecting ends of the spiral members 10 are alined and nested with the other portions of the selvage, and a conveyer belt having finished selva es is thus very cheaply and quickly pro uced. Obviously the width of the selvage may be increased, if desired, by including more turns of the wires 10 between the projections 12 and the'plate 14. In the construction shown in the drawings, the projections 12 are so inserted that a triple row of closely adjacent parallel wires is formed at each edge of the fabric, thus providing a substantial and satisfactory selvage.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is 1. A wire conveyer belt formed of a plurality of interlaced spiral members, the end. turns of said members being crowded against each other to closely adjacent parallel positions at the edges of the conveyer belt to provide longitudinally flexible selvages therefor.

2. A wire conveyer belt formed of a plurality of interlaced spiral members, the end turns of said members being crowded together and compressed against each other to form a triple row of parallel closely adjacent wires at each edge of the fabric, thus providing longitudinally flexible selvages therefor.

3. A wire conve er belt formed of a plurality of interlace spiral members, the spirals of said members eing flattened in crosssection of the fabric and the end turns of said spiral members being compressed widthwise of the belt to closely adjacent parallel position, thereby to form longitudinally flexible selvages at the edges thereof.

7 In testimony whereof I have hereunto affixed my signature.

FRANCIS N. WOODMAN. 

